Day 3 - Do I only count the day if I exercise?

So after two whole days in a row of working out, today was pretty quiet. I got out for a walk at lunch with my friend Anastasia, but I gave in to exhaustion this AM and didn't climb out of bed early for a run. And this evening was a later than usual night at work, so my poor husband was stressed and depressed. No workouts here. Tonight will just have to be a fairly early night, and an early morning run tomorrow. I hope.